Code formatting comes to uv experimentally

I'd rather `ruff` being merged with `ty` instead. `uv` for me is about package / project manager. It's not about code style. The only time `uv` should edit a code file is to update its dependencies (PEP 723).

On the other hand, both `ruff` and `ty` are about code style. They both edit the code, either to format or fix typing / lint issues. They are good candidates to be merged.

I think the goal is to make uv a complete package manager for Python while still giving you the option to use the parts separately.

uv is like cargo for python.

If you only need a fast type checker you can just use ty, if you just need a fast formatter and linter you can just use ruff.

Combining ruff and ty doesn't make sense if you think about like this.